I just thought about something that could be added to this hack (I dont actually use it in my forums, but I was browsing this thread and had this idea). If a post has X amount of groans, it could be automatically deleted or the main postbit thing be converted into a message saying "This post has been rated by the community as a bad post, if you still want to read it please click here" or something like that.
The admincp could have a few options so it can be selected how many groans would be needed to make the post disappear, which usergroups to be bypassed by this function and so on.
I've never seen this turn-arround for vbulletin and it would be handy. If it's already made, im sorry.
Keep up the good work Abe, I have installed most of your hacks-mods

A quality coder indeed.